Jordan's air force chief said on Sunday his country's jet fighters had conducted 56 bombing raids in three days against Islamic State militants in northeast Syria, targeting key bases and arms depots.
Jordan stepped up its bombing of the jihadi group on Thursday in response to the brutal killing by Islamic State of a captured Jordanian pilot, and continued until Saturday.
No new strikes were announced for Sunday. Islamic State militants said in earlier reports that an American the group was holding hostage, Kayla Jean Mueller, was killed in a Jordanian airstrike Friday.